Ball-bearing.



I PATENTED MAY 1, 1906 W. HUPFLINGER s; E. SACHS. BALL BEARING. APPLICATION FILED AUG.2,1905.

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= .WILHELM HoPFLINeEa Ann ERNST SACHS, F SGHWEINFURT, GEnMAiIr .saiisseanmo. I

pecification of Letters Patent.

Application filed August 2, 1905, Serial No. 272,412.

Patented may 1, 19cc.

To all whom it may concern:

Be it known that we, WrLnnLsr HorFLIN- GER, residing at No. 3 Cramer street, and

. of which the to ingI- rings.

he lnvention provides an improved con-- struction having a ball cage or separator in which the balls are arranged closely together, occupying nearly the whole capacit of the bearing, and are spaced by and inc osed in opposite spherical cavities formed in solidmetal divider-rings, which rings are arranged at opposite sides of the balls and substantially close the annular space or interstice between the bearing-rings, said divider-rings being firmly connected to ether. The construc .tion is such that the caring can be filled u with the full number of balls which it is ab e to hold, less one ball, the balls being held only at slight distances apart, so that the greatest capacity of the bearing is obtained, and yet frictional contact of the balls against each other is prevented and deviation of the balls out of the races is avoided, and a smooth noiseless running of the bearin is obtained. The solid divider-rings, filling the interstices between the bearin -rings, cover the balls and avoid entrance o grit or dust to the bearing, and the walls of the spherical cavities being thin at the inner sides of the rings and considerably increasing in thickness toward the outer sides of said rings provide bearingsurfaces of adequate strength to take the pressure of the balls.

The invention is illustrated in practical form in the accompanying drawings, wnich form a part of this specification.

Fi ure 1 is a view, half in front elevation and alf in section, of the ball-bearing. Fig. 2 is a central vertical cross-section of the same. Fig. 3 is a front view of one of the divider-rin s looking at the inner face or side thereof. Fig. 4 is a development of a section on 1ine4 4 of Fig. 3 spread out open.

The ball-bearing illustrated in the drawings comprises two concentric rings a and c, of hardened steel. The outer ring a has an annular groove 6 in its inner periphery, and the inner ring has a confronting groove d in its outer periphery, which grooves formthe ball-races for the interposed series of balls e. The ball so arator or cage comprises two divider-rings l and G, ofsolid metal, arranged -in and closing the interstice between the bearing-rim s at opposite sides of the balls, said divider-rim s being rigidly connected together, with t eir'inner faces in contact, and having opposed s herical cavities h,.each conformln to a haii-ball, the balls being seated and c osed in such cavities, and

thereby spaced and held'in The spherical cavities or ba l-pockets h are formed in the inner faces of the divider-rings by grinding, milling, or the-like These cavities are arranged very closely together, it being observed. from the drawings that the walls 1'. between adg'acent cavities are quite thin at the middle 0 the bearing and increase considerably in thickness toward the outer sides, so that a relatively lar e uantity of balls are emfiployed, arranged c ose y to ether and yet su ciently se arated to avoi contact, while the s herica chambers formed by the united divi er-rings encircle those parts of the balls not contained in the ball-races,

proper position.

providing larger bearingl-isurfaces, whose walls I increase outwardly i n t ckness and st'ren th, so that the thrust and pressure of the bal sis largely taken b r the thick portions of the metal. The bal s e are first introduced in the well-known manner through lateral openings or the like between bearin -rings, as indicated at m in Fi 1. The bal races are filled u with the in 1 number of balls which the bearing is able to contain, less one ball. After the balls have been slipped between the bearing-rings the divider-rings are inserted in opposite sides of the bearing, thereby s acing the balls in the respective chambers ormed by the opposed cavities of the divider-rings, andsaid divider-rings are then firmly connected by rivets Z, screws, or the like. Since the outer surfaces of the divider-rings are in the same planes as the outer surfaces of the bearing, the appliance is very close, and the interior of the caring is protected from disturb ance through external influences. invention the frictional contact of the balls is prevented in the simplest manner and a quiet and noiseless running of the hearing is socured.

Having thus fully described our invention, what we claim as new, and desire to secure by Letters Patent of the United States, is---- A ball-bearing comprising, in combination,

By this concentric bearing-rings separated by an annuhir space or interstice and having 'confronting grooves or bttii lilfiCS in their adjacent peripheries, an interposed series of closely-disposed balls arranged in and between said bell-races, and a hall-5e mrator comprising two dividenrings of solid metal arranged in mid closing the space or inter stiee between the beaming-rings at opposite sides of the balls and rigidly connected together with their inner faces in contact and having opposed spherical cavities formed in said eontnetnw feces which cavities rovide closed chambers inc-losing those parts of the balls not contained in the bull-races, the Walls 1 5 between adaeent cavities being relatively thin and increasing in thickness outwardly, and the outside faces of said divider-rings hein closed or continuous and flush with the si es of the bearing-rings.

In testimony whereof We havesigned our names to this specification in the presence of two subscribing witnesses.

WILHELM HOPFLINGER. ERNST SACHS. XVitnesse-s':

H. BARDEL, E. VVENGLER. 

